Comparison of the High Pressure Structures of Spinel Single Crystals with Composition Mg0.4Al2.4O4 and ZnCr2S4.

• Wittlinger J.

  Institut für Kristallographie und Angewandte Mineralogie der Universität München

• Werner S.

  Institut für Kristallographie und Angewandte Mineralogie der Universität München

• Schulz H.

  Institut für Kristallographie und Angewandte Mineralogie der Universität München

書誌事項

タイトル別名

• Comparison of the High Pressure Structu

抄録

The present study deals with single crystal structure investigations of Mg _{0. 4}Al_{2. 4}O₄ and ZnCr₂S₄ by means of X ray scattering. The compressibility of the oxide substance is very small, whereas the structural changes are surprisingly high. In contrast, the compressibility of the thiospinel is 3 times higher, but the structural changes are very small. The transition to a non-detectable high pressure phase of Mg_{0. 4}Al_{2. 4}O₄ turns out to be reversible considering the existence of a spinel single crystal, but not reversible concerning the values of the lattice constant and the positional parameter of the oxygen anion. This can be explained by pressure induced disordering of the cations, which is preserved on abrupt pressure decrease.

収録刊行物

• 高圧力の科学と技術

  高圧力の科学と技術 7 49-54, 1998

  日本高圧力学会

キーワード

• single crystal
• spinel
• phase transition
• high pressure

詳細情報

• CRID: 1390001204381476992
• NII論文ID: 10002688710
• NII書誌ID: AN10452913
• DOI: 10.4131/jshpreview.7.49
• ISSN: 13481940
• ISSN: 0917639X
• NDL書誌ID: 4493833
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4493833
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可